Road-grading machine.



F. A. RUEwHZ. ROAD GRADING MACHINE.

APPLICATION F`|LED OCT. l2. 19H3.

1,299,997. Patented Apr.8,1919.

' 2 SHEETS-SHEET l.

INVENTOR pgs@ y JMQM ATTORNEY.

F. A. BRUSEWITZ.

ROAD GRADING MACHINE.

APPLICATION FILED OCT-12,1918.

1,299,907. l I 'I Patented Ap1-.8,1919.

2 SHEETS-SHEET 2- IN VEN TOR.

A TTORNEY.

FRANK A. BRUSEWITZ, OF DULUTH, MINNESOTA.

ROAD-GRADING MACHINE.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed October 12, 1918. Serial No. 257,828.

To all 'whom t may concern:

Be it known that I, FRANK A. yBRUSE- wrrz, a citizen of the UnitedStates, residing at Duluth, in the county of St. Louis and State o-fMinnesota, have invented certain new and useful Improvements in Road-Grading Machines, of which the following is a specification, referencebeing had therein to the accompanying drawing.

This invention relates to road grading machines and has specialreference to a grader for common high-ways or dirt roads.

The principal object of the invention is to provide a grader of thischaracter having improved means for lmanipulating the scraper -bladesthereof.

Other objects and advantages of the peculiar construction will appear inthe further description of the invention. Figure 1, is a top plan viewof one of the improved graders,

Fig. 2, is a front elevation of one of the laterally operativev scraperblade supports, Fig. 3, is an outer end elevation of Fig. 2,

Fig. 4, is a side elevationof one of the scraper blade draft hooks,

Fig. 5, is a transverse sectional view taken on the line 5 5 of Fig. lVlooking rearwardly, p n

Fig. 6, is a broken side elevation of one of the laterally adjustingvrods ofthe wheeled Supports, l

Fig. "7, is a similar elevation taken at right angles to Fig. 6, and y vFig. 8, is a transverse sectional View through one of the laterallyextendible bars,

showing one form of manually manipulating l same.

1 1 represents the side frames of the chassis which is of the usualrectangular form carried upon the fiXed rear aXle 2 and Y the frontpivotally mounted aXle 3, this front aXle having the usual pivotalattachment not shown, as it forms no pant of my present invention. v

The rear axle 2 is carried upon suitable wheels 4 4 and the front aXle 3is carried on similar wheels 5 5. v

I prefer to make the side frames 1 1 of box girder constructionv andhave illustrated the front end 'carried upon a suitable bolster 65.Transverse the Yfront end of the chassis is a suitable cross piece 7 ineach end of which is mounted a vertically disposed shaft 8, carryingupon its upper end a suitable hand wheel 9 for the manual manipulatingthereof. The lower end of each shaft 8 is journaled within the eXtremeend of the bolster 6 and intermediate of which and 'the cross piece 7,the shaft 8 is designed to carry one of the draft lines 10, there beingtwo of such draft lines, one upon either side of the machine and uponwhich suitable tension is brought by rotation of its respective shaft 8.The opposite end of each draft line 10 is attached to its respectivescraper blade 1l by a suitable arched bar 12.

By this arrangement the major portion of the longitudinal stress uponthe scraper blades is applied directly lto the forward corners of thechassis.

Within suitable transverse guides upon i toward one side of the machineand the otherk toward the opposite side thereof.

At the rear of the chassis are identical bars 18 and 19 reciprocallysupported in suitable guides. indicated at 20, 21, and 22. These bar s,their supports and cooperative parts are all identical and I shallproceed to describe but one thereof which is deemed suicient forcomprehensive understanding of the device, though the specificconst-rucrtion does not form part of the invention uponwhich patentprotection is desired.

Considering the bar 16 as illustrated in Fig. 2; A

This bar pivotally carries upon its outermost end the upwardly archedscraper blade supporting arm 23, which is attached to the outer conveXsurface ofthe blade 11 in any desired manner or, as illustrated at24-24. The arm 23 is attached by suitable link connection 25 to thelower end of an upright rectangular shaped frame which comprises theends 26and 27 and the side pieces 28 and 29, the inner edge of thelatter having cogs 30 formed therein which provide a suitable tablycarried in the head frame k31 of the Vsupporting standard. This standardcomprises also the parallel uprights 32-32 and the foot frame 33. Thefoot frame is pivotally mounted as at 34. upon a short bold ster 35havingl depending parallel arms 36 intermediate of which the supportingwheel 37 is journaled as at 38.

The wheel 437 and bolster 35 pivotally supports the mechanism and are.adjustable to any pivotal position by a suitable arrangement of leversindicated at 39, 46,41, and 42. As a means for adjusting the rod 42longitudinally I have illustrated in Figs. 6 and-7 a hand leverconnection of simple construction, however this specialform may or maynot be used as desired. Two rods 43-43 are pivotally attached as at 44to the head fra-me 31, convergingfinwardly toward the chassis and areattached toa cross head 45 rigidly carried upon the end of the bar 16 bya suitable bracket indicated at 46.

The spur gear 47 which :meshes with the rack 29 is 'carried upon a shortshaft 48 journaled within the head frame 31 and is manually rotatablefrom the chassis by a square section of shaft 49 being journaledtransverse the chassis and operated in either directionby a suitablelever with pawl and ratchet combination indicated aft 50. The end ofthis shaft is connected at its outer end by a universal joint 51 to theinclined shaft '52 which at its upper end is attached to the shaft 48 bya similar universal joint indicated at 53.

- In this manner the scraper blade arms 23 may be raised or lowered byan operator on the machine and the supporting wheel may be turnedv totraverse transverse the bed of the road being graded, or longitudinallythereof as desired,-by the lever attachment before described. Two bracerods 54v similarj to rods 43 are piv'otally attached as at 55 to theframe 33 and at their opposite ends as at 56 to the end of the bar 16,these being for the purpose of sustaining the base of the supportlaterally.

By this arrangement it is evident that the scraper blades may be raisedor lowered in respect to their supporting wheels 37 and cooperativeframes, or in other words the cut of the blades accurately gaged. f f

Approximately midway the ends of the chassis I have illustrated onecenvenient embodiment of means for raising and lowering thel scraperblades together with their wheel ksupports bodily. .This means comprisesa transverse beam 57 being arched upwardly at its ends as at 58', therebeing a suitable sheave journaled within the extreme end of each archedportion as at 59. Adjacent each arched portion of the beam 57 ispivotally mounted a hand lever 60 having attached thereto a draft line61 as at 62, which draft line passes over its respective sheave in theend of the beam and leads to its respective grading blade`11 to which itis attached in any convenient manner, as for yexample by the hook 63engagin the strap 64 rigidly fixed to the blade. djacent the center ofeither one or both of the blades may be quickly raised or lowered andwhich act will carry ,with the blades all their previously describedmechanisms.

One convenient means forreciprocally operatin the laterally extendiblebars 16, 17.v 18, an y19 and thus regulating the width of the scraper,is illustrated in Fig. S.` f

This arrangement consists of a short shaft 65 journaled transverse theunder side of the guides which in this view are those designated as 13and 14.

Upon the shaft is fixed a spur gear 66 which meshes with the rack 67formed on the underside of thebar 16, and a similar gear 68 is fixed tothe shaft adjacent its outer end. A hand lever 69 is loosely mountedupon the end of the shaft in close proximity to the gear 68 having ahandcontrolled'reciprocal catch rod 70 which coperatively engages with thegear 68 and by which the shaft 65 may be intermittently rotated ineither di- .rection by the operator.

It is apparent from the foregoing that this.-

novel combination permits of the construction of a very large, light andstrong machine, the parts of which are exceedingly easy of manualmanipulation and the blades having independently operative supportingmeans in the wheels 37 and their accompanying` frame structures permitsVof the lightest form possible of chassis.

Having thus described my invention what I claim as'new and/desire tosecure by LettersfPatent is f Y 1. The combination with a road grader ofthe v character described comprising a chassis and grading` bladescarried upon either side of the chassis of a single wheeled supportintermediate of` eachl end of each blade and the chassis andindependently operative means whereby the blades may be adjustedvertically upon the intermediate supports.

2. The combination with a road grader of the character describedcomprising a chassis and grading blades earried'upon either sidethereof, of independently laterally adjustable wheeled supportsintermediate of each end of each of the blades and the chassis andindependently operative means whereby the blades may be adjustedvertically upon the intermediate supports.

3. The combination with .a road grader comprising a chassis having agrading blade upon each side thereof, of an independently laterallyadjustable. support carried by the chassis for each end of each blade, aground engagingl wheel under each support and means w ereby said wheelsmay be turned and positively held at any angle desired for the purposedescribed. f

4. The combination with a road grader comprising a chassis having agrading blade upon each side thereof, of supporting means engaging vtheroad intermediate of both ends of both blade and the chassis, saidsupporting means being independently operative both laterally, inrespect to the vehicle, and vertically.

5. The combination with a road grader comprising a chassis having agrading blade upon either side thereof, of laterally movable groundengagin supports intermediate of both ends of thev lades and thechassis, means whereby the blades may be adjusted vertically upon theirintermediate supports and means whereby the blades together with theirintermediate supports may be "raised or lowered separately orsimultaneously.

6. The combination with a roadgr-ader comprising a chassis, having aading blade upon either side thereof and b ade carrying arms pivotallycarried by the chassis, of laterally movable wheeled supports at eitherend of the chassis, means upon each support for adjustably holding oneof the blade-carrying arms, means for raising and lowering the arms uponthe support and means for operating the supports substantially asdescribed.

7. The combination with a road grader comprising va chassis having agrading blade upon either side thereof and blade-carrying arms pivotallycarried by the chassis, of laterally movable wheeled supports at eitherend of the chassis, means upon each support for adjustably holding oneof the blade-carrying arms, means for raising and lowering the arms uponthe support, means for operating the supports laterally inrespect to thechassis, and independent means for raising or lowering the blades andtheir supports simultaneously.

In testimony whereof I hereunto allx my signature in the presence of twowitnesses.

FRANK A. BRUSEWITZ. Witnesses:

BEN GUs'rArsoN, S. C, BRoNsoN.

y Copies of this patent may be obtained for ive cents each, byaddressing the Commissioner of Patents,

.Washingtom D. C.

